On 6 May 2018 at 16:44, Rainer Emrich wrote: > Bootstrap is done with msys2 on Windows 7. For the testsuite results see > https://gcc.gnu.org/ml/gcc-testresults/2018-05/msg00583.html Thanks for this. Would you be able to send me the $objdir/$target/libstdc++-v3/testsuite/libstdc++.log file?